Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite

We show high-resolution satellite observations of mountain wave events in the stratosphere above South Georgia Island in the remote southern Atlantic Ocean and compute the wave momentum fluxes for these events. The fluxes are large, and they imply important drag forces on the circulation. Small isla...

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Main Authors: Alexander, M. Joan, Eckermann, Stephen D., Broutman, Dave, Ma, Jun
Format: Other/Unknown Material
Language:unknown
Published: 2009
Subjects:
46
South Georgia Island
Online Access:http://ntrs.nasa.gov/search.jsp?R=20100027385
id ftnasantrs:oai:casi.ntrs.nasa.gov:20100027385
record_format openpolar
spelling ftnasantrs:oai:casi.ntrs.nasa.gov:20100027385 2023-05-15T18:21:29+02:00 Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite Alexander, M. Joan Eckermann, Stephen D. Broutman, Dave Ma, Jun Unclassified, Unlimited, Publicly available January 2009 http://ntrs.nasa.gov/search.jsp?R=20100027385 unknown http://ntrs.nasa.gov/search.jsp?R=20100027385 Copyright Other Sources 46 AD-A522418 2009 ftnasantrs 2012-04-21T23:20:40Z We show high-resolution satellite observations of mountain wave events in the stratosphere above South Georgia Island in the remote southern Atlantic Ocean and compute the wave momentum fluxes for these events. The fluxes are large, and they imply important drag forces on the circulation. Small island orography is generally neglected in mountain wave parameterizations used in global climate models because limited model resolution treats the grid cell containing the island as ocean rather than land. Our results show that satellite observations can be used to quantitatively constrain mountain wave momentum fluxes, and they suggest that mountain waves from island topography may be an important missing source of drag on the atmospheric circulation. Other/Unknown Material South Georgia Island NASA Technical Reports Server (NTRS) South Georgia Island ENVELOPE(-36.750,-36.750,-54.250,-54.250)
institution Open Polar
collection NASA Technical Reports Server (NTRS)
op_collection_id ftnasantrs
language unknown
topic 46
spellingShingle 46
Alexander, M. Joan
Eckermann, Stephen D.
Broutman, Dave
Ma, Jun
Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite
topic_facet 46
description We show high-resolution satellite observations of mountain wave events in the stratosphere above South Georgia Island in the remote southern Atlantic Ocean and compute the wave momentum fluxes for these events. The fluxes are large, and they imply important drag forces on the circulation. Small island orography is generally neglected in mountain wave parameterizations used in global climate models because limited model resolution treats the grid cell containing the island as ocean rather than land. Our results show that satellite observations can be used to quantitatively constrain mountain wave momentum fluxes, and they suggest that mountain waves from island topography may be an important missing source of drag on the atmospheric circulation.
format Other/Unknown Material
author Alexander, M. Joan
Eckermann, Stephen D.
Broutman, Dave
Ma, Jun
author_facet Alexander, M. Joan
Eckermann, Stephen D.
Broutman, Dave
Ma, Jun
author_sort Alexander, M. Joan
title Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite
title_short Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite
title_full Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite
title_fullStr Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite
title_full_unstemmed Momentum Flux Estimates for South Georgia Island Mountain Waves in the Stratosphere Observed via Satellite
title_sort momentum flux estimates for south georgia island mountain waves in the stratosphere observed via satellite
publishDate 2009
url http://ntrs.nasa.gov/search.jsp?R=20100027385
op_coverage Unclassified, Unlimited, Publicly available
long_lat ENVELOPE(-36.750,-36.750,-54.250,-54.250)
geographic South Georgia Island
geographic_facet South Georgia Island
genre South Georgia Island
genre_facet South Georgia Island
op_source Other Sources
op_relation http://ntrs.nasa.gov/search.jsp?R=20100027385
op_rights Copyright
_version_ 1766200765990305792

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